摘要
对陶瓷颗粒进行预处理之后,在非真空感应炉中,利用预制件法、无旋涡机械搅拌法和半固态机械搅拌法制备了颗粒增强铝基复合材料.结果表明:3种方法都能成功地解决颗粒与基体金属之间润湿性差的难题.但是预制件法制备的复合材料的颗粒体积分数有限,无旋涡机械搅拌法的制备温度高,故这两种方法均不适合制备体积分数高（大于 20％）、颗粒尺寸小的复合材料而利用半固态机械搅拌法,能够将颗粒尺寸为3.5μm;体积分数为40％的SiC颗粒加入到金属Al中,但是当颗粒体积分数大于30％时,机械搅拌方式不能将颗粒均匀地分散在基体金属中.
After pretreating of reinforcing ceramic particles the Al matrix composites have been prepared in non-vacuum induction furnace by the methods of prefabricate, non-vortex and semi-solid mechanical stirring. The results indicated that the three liquid methods could overcome the difficulty of wettability between ceramic particles and aluminum-alloy or pure aluminum. But the volume fraction of particles in composite fabricated by prefabricate method was finite. The temperature of composite fabricated by non-vortex mechanical stirring method was higher than other methods. The two methods weren't fit for manufacturing composites with high volume fraction of particles. SiC particles with average size of 3.5μm and volume fraction of 40% could be stirred into pure aluminum by semi-solid mechanical stirring method. But as the volume fraction of particles was more than 30%, the particles couldn't distribute uniformly in pure aluminum matrix.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第8期885-887,共3页
Acta Metallurgica Sinica
